Elena, there is an E-mail address in the site for contacting Bob. Keep in mind that corporate buying decisions work the other way around. Sears makes a decision to stock something for their stores and buys the product. If they want to push the sale of the item, they make a commercial on it with Bob. On shows like Home Again, the homeowner hires a contractor who hises subcontractors. The contractor and subcontractors bring theirown tools and equipment to the job. These may or may not be available at Sears. Specialty tools frequently are not.
If you really want to get Bob's attention, have your sales people sell a lot to Sears and offer to work out a joint advertising program. The ad program will cost a lot of money so this will be a big risk for your company. And even then, the commercials in which he appears might be sold exclusively at Sears.
Good luck to you, but the chances of getting free advertising are pretty slim. Henry in MI